US3567416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of press bending glass sheets
Assignee: PPG Industries Inc
•
Filing: 1968-01-19
•
Granted: 1971-03-02
•
Expires: 1988-01-19
Abstract
Abstract PRESS BENDING GLASS SHEETS BETWEEN SHAPING MOLDS HAVING CONTROLLED TEMPERATURE DURING THE PRESS BENDING OPERATION. THE TEMPERTURE OF THE MOLDS IS CONTROLLED WITHIN A TEMPERATURE RANGE SUCH THAT WHEN THE MOLDS ENGAGE THE GLASS SURFACES SHAPING THE LATTER, THEY COOL THE GLASS SURFACES AT APPROXIMATELY THE SAME COOLING RATE AS THE AMBIENT ATMOSPHERE IN SPACES THROUGHOUT THE MOLD FACES.
Inventors
- 👤 George W Stilley
- 👤 Joseph D Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:30
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/031
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |